Answer:
D-Day
Explanation:
<u>D-Day, also known as The Normandy landings, (6th of June, 1944) is the largest seaborne invasion in history. Its goal was to drive Nazis from France, but it spread to the rest of occupied Western Europe.</u>
<u>On this day, allied troops landed on the coastline of Normandy with more than 5 thousand ships, and started fighting and progressing to central Europe. </u>
This was the cornerstone of the Allied victory on the western front and the liberation of occupied Europe from the Nazis.
Some of theses changes should occur when there is no war going on. This is to make the country be modernized by the technology. If there is a war going on, the improvement of each technologies will be lessen and could possibly be stopped.
Highest point is mount everest i think..